projects / apple / security.git / blame
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1 | /* Copyright (c) 1998 Apple Computer, Inc. All rights reserved. |
| 2 | * | |
| 3 | * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT | |
| 4 | * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE | |
| 5 | * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE COMPUTER, INC. AND THE | |
| 6 | * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE COMPUTER, | |
| 7 | * INC. ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL | |
| 8 | * EXPOSE YOU TO LIABILITY. | |
| 9 | *************************************************************************** | |
| 10 | * | |
| 11 | * ellipticProj.h - declaration of elliptic projective algebra routines. | |
| 12 | * | |
| 13 | * Revision History | |
| 14 | * ---------------- | |
| 15 | * 10/06/98 ap | |
| 16 | * Changed to compile with C++. | |
| 17 | * 1 Sep 1998 Doug Mitchell at Apple | |
| 18 | * Created. | |
| 19 | */ | |
| 20 | ||
| 21 | #ifndef _CRYPTKIT_ELLIPTIC_PROJ_H_ | |
| 22 | #define _CRYPTKIT_ELLIPTIC_PROJ_H_ | |
| 23 | ||
| 24 | #include "ckconfig.h" | |
| 25 | ||
| 26 | #if CRYPTKIT_ELL_PROJ_ENABLE | |
| 27 | ||
| 28 | #include "giantIntegers.h" | |
| 29 | #include "curveParams.h" | |
| 30 | ||
| 31 | /* | |
| 32 | * A projective point. | |
| 33 | */ | |
| 34 | typedef struct { | |
| 35 | giant x; | |
| 36 | giant y; | |
| 37 | giant z; | |
| 38 | } pointProjStruct; | |
| 39 | ||
| 40 | typedef pointProjStruct *pointProj; | |
| 41 | ||
| 42 | pointProj /* Allocates a new projective point. */ | |
| 43 | newPointProj(unsigned numDigits); | |
| 44 | ||
| 45 | void /* Frees point. */ | |
| 46 | freePointProj(pointProj pt); | |
| 47 | ||
| 48 | void /* Copies point to point; pt2 := pt1. */ | |
| 49 | ptopProj(pointProj pt1, pointProj pt2); | |
| 50 | ||
| 51 | void /* Point doubling. */ | |
| 52 | ellDoubleProj(pointProj pt, curveParams *cp); | |
| 53 | ||
| 54 | void /* Point adding; pt0 := pt0 - pt1. */ | |
| 55 | ellAddProj(pointProj pt0, pointProj pt1, curveParams *cp); | |
| 56 | ||
| 57 | void /* Point negation; pt := -pt. */ | |
| 58 | ellNegProj(pointProj pt, curveParams *cp); | |
| 59 | ||
| 60 | void /* Point subtraction; pt0 := pt0 - pt1. */ | |
| 61 | ellSubProj(pointProj pt0, pointProj pt1, curveParams *cp); | |
| 62 | ||
| 63 | void /* pt := pt * k, result normalized */ | |
| 64 | ellMulProjSimple(pointProj pt0, giant k, curveParams *cp); | |
| 65 | ||
| 66 | void /* General elliptic mul; pt1 := k*pt0. */ | |
| 67 | ellMulProj(pointProj pt0, pointProj pt1, giant k, curveParams *cp); | |
| 68 | ||
| 69 | void /* Generate normalized point (X, Y, 1) from given (x,y,z). */ | |
| 70 | normalizeProj(pointProj pt, curveParams *cp); | |
| 71 | ||
| 72 | void /* Find a point (x, y, 1) on the curve. */ | |
| 73 | findPointProj(pointProj pt, giant seed, curveParams *cp); | |
| 74 | ||
| 75 | #endif /* CRYPTKIT_ELL_PROJ_ENABLE*/ | |
| 76 | #endif /* _CRYPTKIT_ELLIPTIC_PROJ_H_ */ |